Hull for vessels in armed concrete.



L. GALLINGANL I HULL FOR VESSELS lN ARMED CONCRETE. APPLICATION FILED AUG.16. i918- 1,299,699.l Patented Apr. 8,1919.

LUIGI GALLINGANI, 0F GENOA, ITALY.

HULL FOB VESSELS IN' ARMED CONCRETE.

Specification of Letters Patent.

Patented Apr. 8, 1919.

Application ined Angustia, 191s. serial No. 250,249.

To all whom t may concern.'

Be it known that I, LmGI GALLINGANI, a subject of the King of Italy, and residing at Via Cadare 2, Grenoa,v Italy, have invented certain new and useful Improvements in Hulls for Vessels in Armed Concrete, of which the following is a specification.

This invention relates to improvements in concrete ships hulls, and the main object is to provide a concrete hull which is of less weight than the concrete hulls heretofore used.

Another object of the invention is to provide a combined concrete and wood hull, which is of simpler construction than the hulls heretofore known, and which is less liable to leakage.

With the foregoing objects outlined and with other objects in view, the invention consists in the novel features hereinafter described in connection with the accompanying drawing and more particularly pointed out in the appended claims.

Referring to the drawing Figure 1 is a perspective view, partly in section, of the improved hull.

Fig. 2 is a detail sectional view taken on line A-A of Fig. 1.

Fig. 3 is a. sectional View taken on line B-B of Fig. 1.

Figf is a section on line C-C of Fig. 1.

In the drawing the hull comprises a con* crete outer shell 1 reinforced by metal rods 2 and integral with longitudinal internal frame beams 2a and internal transverseframe ribs 2". The beams and ribs form pockets 2, which are lined with wooden planks 3 extending fore and aft and arranged closely adjacent each other transversely of the ships, so that said planks when brought into contact with water will have a tendency to swell and cause their meeting side edges to form water-tight joints. The side edges of the planks 3 are provided with undercuts 3a, which have their greatest depth toward the inner surface of the planks, and the under-cuts of adjacent planks form dovetail recesses or grooves into which keys or projections 3b of the shell 1 extend, so that said shell is interlocked with the planks. The outer faces of the planks are provided with dovetail grooves 4 which interlock with dovetail keys 4 of the concrete shell. The ends of the planks are provided with dovetail grooves 4 with which the concrete of the ribs 2b are interlocked.` Themeeting edges of the planks may be provided with notch and tenon joints ,5, if desired. f

The 'wooden planks, though applied to the parts of the hull less subjected to strains, contribute ,to the resistance of the structure and form elastic connections in either direction.

The improved hull, while possessing all the advantages of the ordinary concrete hull, also has advantages not possessed by the ordinary concrete vessel.

An essential advantage of the hull according to the present invention resides in its small weight as compared with a hull 'entirely of armed concrete. With a hull according to the invention impermeability to water is assured, and in case the concrete shell cracks, the wood will absorb the small infiltrations and will swell, thus closing the lining and preventing the water from entering the interior of the hull.

The hull of the present invention may be easily built, requiring only an exterior form for the A shell and interior forms for the beams and ribs, while the wooden planks 3, which form a part of the hull, assume themselves the function of the auxiliary lining for the interior of the shell.

The lining of wooden planks of the hull also permits the gradual manufacture of the hull, as the wooden planks may be erected in accordance with the rapidity of the filling of the concrete. In this manner, the work of construction may be interrupted without disadvantage. In employing wooden planks the exact arrangement of the iron rods within the concrete is facilitated.

The lining of wooden planks will form the interior of the finished hull and the wooden walls will olfer reater facility in attaching the usual fittings required for the interior equipment. The wooden lining will also absorb shocks delivered to the interior of the hull.

The lining permits repairs to be made with great expediency and damaged interior elements may be speedily replaced without damaging the concrete shell.

What I claim and desire to secure by Letters Patent is 1. In a reinforced concrete vessel including transverse frames of reinforced concrete, a lining of wooden planks extending fore and aft and having their side edges ar- 15 forced concrete provided With ranged closely adjacent each other, the ends of the planks extending into the transverse frames.

2. In a reinforced concrete vessel including transverse frames of reinforced concrete, a lining of Wooden planks extending fore and aft and having their side edges arranged closely adjacent each other, the ends of the planks extending into ,the transverse frames, said planks being provided With grooves in which keys of concrete are arranged vfor interlocking the lining. to -the concrete vesseLr 3. \A vessel hull comprising a shell .of reininterior beams and transverse frames, a lining of Wooden planks extending fore and aft and having their ends' extending into the transverse frames, said lining being provided with grooves, and concrete keys integral with said shell and interlocking with said grooves. y

In testimony whereof I have signedf..niy name to this lspecification in the presence of two subscribing Witnesses.

LUIGI GALLINGANI.

Witnesses:

ADOLFO WEBER, WILLIAM P. SHOCKLEY.

Copies of this patent may he obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

